Every master shall, not less than forty-eight hours before paying off or discharging any seaman, deliver to him, or, if he is to be discharged before a shipping-commissioner, to such shipping-commissioner, a full and true account of his wages, and all deductions to be made therefrom on any account whatsoever; and in default shall, for each offense, be liable to a penalty of not more than fifty dollars. No deduction from the wages of any seaman except in respect of some matter happening after such delivery shall be allowed, unless it is included in the account delivered; and the master shall, during the voyage, enter the various matters in respect to which such deductions are made, with the amounts of the respective deductions as they occur, in the official log-book, and shall, if required, produce such book at the time of the payment of wages, and, also, upon the hearing, before any competent authority, of any complaint or question relating to such payment. (R. S., 4550.) Upon the discharge of any seaman, or upon payment of his wages, the master shall sign and give him a certificate of discharge, specifying the period of his service and the time and place of his discharge, in the form marked Table B in the schedule annexed to this Title [R. S., 4501-4613]; and every master who fails to sign and give to such seaman such certificate and discharge, shall, for each such offense, incur a penalty not exceeding fifty dollars. But whenever the master shall discharge his crew or any part thereof in any collection-district where no shipping-commissioner has been appointed, he may perform for himself the duties of such commissioner. (R. S., 4551.) Discharge in foreign ports. Upon the application of the master of any vessel to a consular officer to discharge a seaman, or upon the application of any seaman for his own discharge, if it appears to such officer that said seaman has completed his shipping agreement, or is entitled to his discharge under any act of Congress or according to the general principles or usages of maritime law as recognized in the United States, such officer shall discharge said seaman, and require from the master of said vessel, before such discharge shall be made, payment of the wages which may then be due said seaman; but no payment of extra wages shall be required by any consular officer upon such discharge of any seaman except as provided in this act. (R. S., 4580; June 26, 1884; sec. 2.)